OK, a few things that weren't covered in the other answer:
First of all, the specs suggested by a developer are pretty arbitrary. They can put whatever they want, and they will typically put something a bit higher than is strictly necessary to be sure that anyone with the minimum specs will run the game at an enjoyable graphics setting and frame rate. If you are willing to run the game at minimum graphics settings, a lower resolution (Although also not a rule in my experience the minimum specs assume 1080p and many laptops are lower resolution than that so it's likely you have been doing that without even realizing it) and at 30 fps you can get away with much lower system specs.
Secondly, it sounds like you looked up those 3D mark scores from a table instead of testing your own card? Not every GPU has an identical 3D mark score to other GPUs of it's type. Every individual GPU is different. 10000 to 11190 is only a 10% difference, it's possible that the people you saw using one on Youtube got lucky and ended up with one that performs above average, they had the same card but with more VRAM (many cards come in multiple versions with different amounts of VRAM, all other things the same more VRAM will increase the score a bit), they had a different non-reference (explained bellow) model of the same GPU with different clock speeds eg EVGA vs MSI or that you simply can't see the 10% difference in a Youtube video.
And finally, benchmarks are largely synthetic and do not always translate directly into game performance. The sort of calculations required vary between games, so while cards typically perform more or less in line with their benchmarks that is not always the case. Cards can be ranked differently based on different benchmarks as well, there are a few other big ones like Firestrike or Unigine Valley. The best way to be sure of a certain card's performance is to look up benchmarks of a certain game you want to play, they will try that particular game with different cards at different resolutions so you can see exactly how different cards stack up in a real world situation, you can not directly compare with synthetic benchmarks nor with VRAM amounts and clock speeds. However, keep in mind that although the GPU is the most important piece of the puzzle your CPU and system RAM can be quite important as well depending on the game so if possible find a benchmark that uses a similar processor and amount of RAM.
Now that I have answered the question I am going to talk a little about some general knowledge needed to understand different models of GPU, just in case something wasn't clear above or there is some background info that is currently unknown.
One thing that many people believe is that more VRAM is inherently better, and the GPU manufacturers know this and take advantage of it. It is not uncommon for a low to mid end card to be sold with 3 or 4gb of VRAM to make it sound better than it is, often times they even use DDR3 (normal computer RAM) instead of GDDR5 (specialized VRAM) when they do this. General rule of thumb is that a card with extra VRAM will be better than cards of the same model with less VRAM and sometimes will be better than or comparable to cards of one model up. Always make sure that the GPU you buy has GDDR5 or for the latest high end cards HBM1 or HBM2 VRAM. Even low end cards are all GDDR5 these days.
Another thing that GPU manufacturers commonly take advantage of is rebranding old models of GPU. Sometimes they do make a new low end chipset but many of their low and mid end GPUs are last year's high end GPUs with a new label. This is not necessarily a bad thing but it is something to be aware of when looking at GPUs, and part of the reason some features which don't seem that expensive to add to a GPU (eg HDMI 2.0) might take a little to trickle down to the low end.
A reference card is when the board partners like MSI, ASUS, EVGA, Sapphire etc make the card exactly as Nvidia or AMD designed it, non-reference is when the manufacturer tweaks the GPU a little to make it better. These tweaks come in the form of better coolers (The most common tweak, a GPU can have a reference circuit board but an aftermarket cooler), extra power plugs for more electricity to overclock, doubled amounts of VRAM, better voltage regulation components etc.